Kepler-737: Difference between revisions
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| temperature = 3,813{{±|40.127|38.492}}<ref name=Kyoto/> |
| temperature = 3,813{{±|40.127|38.492}}<ref name=Kyoto/> |
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| radius = 0.480{{±|0.0026|0.0024}} |
| radius = 0.480{{±|0.0026|0.0024}} |
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| age_gyr = 3.89 |
| age_gyr = 3.89 |
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| gravity = 4.722±0.008 |
| gravity = 4.722±0.008 |
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| metal_fe = -0.24 {{±|0.087|0.081}} |
| metal_fe = -0.24 {{±|0.087|0.081}} |
Revision as of 14:59, 27 February 2022
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cygnus[1] |
Right ascension | 19h 27m 27.085s[2] |
Declination | +46° 25′ 45.89″[2] |
Characteristics | |
Evolutionary stage | main-sequence[3] |
Spectral type | M0V[3] |
Apparent magnitude (G) | 15.127694[4] |
Apparent magnitude (J) | 12.910[4] |
Apparent magnitude (H) | 12.293[4] |
Apparent magnitude (K) | 12.097[4] |
Apparent magnitude (B) | 17.861[2] |
Apparent magnitude (V) | 15.971[2] |
Apparent magnitude (W) | 11.969[2] |
Astrometry | |
Proper motion (μ) | RA: 20.094 mas/yr Dec.: -19.889 mas/yr |
Parallax (π) | 4.859 ± 0.0194 mas |
Distance | 671 ± 3 ly (205.8 ± 0.8 pc) |
Details | |
Mass | 0.510+0.0026 −0.0027 M☉ |
Radius | 0.480+0.0026 −0.0024 R☉ |
Luminosity | ~0.045 L☉ |
Surface gravity (log g) | 4.722±0.008 cgs |
Temperature | 3,813+40.127 −38.492[3] K |
Metallicity [Fe/H] | -0.24 +0.087 −0.081 dex |
Age | 3.89 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Kepler-737 is an M-Type main-sequence red dwarf located 671 light-years away in the constellation Cygnus. It was discovered by HARPS using the transit method and announced on May 10, 2016.[5] To the naked eye, it appears a single faint star of its magnitude.[4]
Physical properties
General Properties
Kepler-737 is around half the size of the Sun, with a mass of 0.51 solar masses and a radius of 0.48 solar radii.[1] It's spectral class is M0V, its temperature is about 3,813 Kelvin, with a brightness of 0.045 solar luminosity.[2] Scientists proclaimed the different stellar ages of the star because of celestial bodies, one of KOI Table claimed a star to be 14 billion years old. Its age can range from 3.8 to 14.6 billion years old. [2]
As for the logarithm of the relative abundance of Iron and Hydrogen, its Metallicity [Fe/H] is -0.24+0.087
−0.081 dex, containing Iron and Hydrogen on its core, significantly lower than the Sun's. Its density is rough ~5.239±0.265 g/cm3.[2] Its gravity is weaker than the Sun, have at least 4.722±0.008 cgs with a base-10 logarithm (log g). Its stellar density is about ~5.239±0.265 g/cm³ Solar Density, while the sun has about 1.41 g/cm³ solar density[2]
Astrometry and Characteristics
SIMBAD data indicate that its proper motion is 20.094 mas/yr for Right ascension, -19.889 mas/yr for Declination, its parallax is 4.859 mas[4]. There are many confirmed apparent magnitudes pending on NASA headquarters, these apparent magnitudes employed to measure the brightness of a star Kepler-737 with their filter names. Its distance is alternatively 205.8 ± 0.8 pc
Planetary System
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius[5] |
---|---|---|---|---|---|---|
b | ~4.5 M🜨 | 0.035 | 28.592 | 0 | 89.99° | 1.96±0.11 R🜨 |
Kepler-737b
Kepler-737b[5] was discovered and suspected since May 18, 2016, for orbiting in the habitable zone but not likely to be inhabitable because Kepler-737b is tidally locked.[6] [7][8] Kepler-737b may instead have atmospheric circulation that would distribute the heat around the planet, potentially making a large portion of it habitable, although given its stellar flux the most likely scenario is that the planet's surface is too hot to be habitable. Water on Kepler-737b's surface could also distribute heat.
On the note of the Exoplanet Archive, Kepler-737b was dedicated that orbital period, transit mid-point, transit duration, Rp/Rs, and their errors are taken from DR24 KOI table[2]
References
- ^ a b "Kepler-737". Universe Guide. Retrieved May 18, 2016.
- ^ a b c d e f g h i j "Kepler-737's Documentary in NASA Exoplanet Archive". NASA Exoplanet Archive. Retrieved May 18, 2016.
- ^ a b c "Kepler-737". Exoplanet Kyoto. Retrieved May 18, 2016.
- ^ a b c d e f "Kepler-737". SIMBAD. Retrieved May 18, 2016.
- ^ a b c "Planet beyond our solar system: Kepler-737b". Exoplanet Exploration. Retrieved May 18, 2016.
- ^ "Tidally locked exoplanets may be more common than previously thought". UW News. Retrieved 2021-05-18.
- ^ Hammond, Mark; Lewis, Neil T. (2021-03-30). "The rotational and divergent components of atmospheric circulation on tidally locked planets". Proceedings of the National Academy of Sciences. 118 (13): e2022705118. arXiv:2102.11760. Bibcode:2021PNAS..11822705H. doi:10.1073/pnas.2022705118. ISSN 0027-8424. PMC 8020661. PMID 33753500.
- ^ Sutter, Paul (2021-03-08). "Can super-rotating oceans cool off extreme exoplanets?". Space.com. Retrieved 2021-05-18.